They are resources that are the building blocks of the economy.
Answer: Cross-promotion
Explanation:
Southwest airlines and Carnival cruises are engaged in a Cross-promotion, where the both companies services are used to promote to other.
Cross-promotion simply is a business concept, whereby a product/service is used to promote another product/service. An example is a soft drink production company promoting the consumption of their soft-drink products with snacks produced by a particular popular fast-food restaurant.
Answer:
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Explanation: